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MHT CET202415 May 2024Morning ShiftPhysicsMechanical Properties of FluidsActual

Two capillary tubes A and B of the same internal diameter are kept vertically in two different liquids whose densities are in the ratio 4: 3 . If the surface tensions of these two liquids are in the ratio 6: 5 , then the ratio of rise of liquid in capillary A to that in B is (assume their angles of contact are nearly equal)

Options

  1. A10:9
  2. B9: 10
  3. C7:10
  4. D10: 7

Correct answer

B. 9: 10

Step-by-step solution

aligned & r₁=r₂ & ₁ ₂ = 4 3 ; T₁ T₂ = 6 5 ; ₁= ₂ h & = 2 T r g h T h₁ h₂ & = T₁ T₂ ₂ ₁ h₁ h₂ & = 6 5 3 4 = 9 10 aligned

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